单选题 Successful students sometimes become so ______ with grades that they never enjoy their school years.
  • A. passionate
  • B. involved
  • C. immersed
  • D. obsessed
【正确答案】 D
【答案解析】[解析] passionate热情的，急躁的；involved被卷入某事中；immersed专心做某事；obsessed被某事困扰。答案是D。